By continuing to browse this site, you must accept the use and writing of Cookies on your connected device. These Cookies allow us to track your navigation, update your basket, recognize you on your next visit and secure your connection. For more information, please click here.

Clew strap in Dyneema® with pulley | SC-Nub®


Sc-Nub® is a Dyneema®" boom sling with a heavy-duty Nub friction block for attaching the clew of a free-sailing mainsail to the boom. 

No-drill boom attachment with lashing "tie strap type attachment" supplied in Dyneema®.

Materials: Dyneema® / High T° thermoplastic

See features below
Product Name

  • International delivery International delivery
    Shipped within 48h
  • Secure payment Secure payment
    Credit Card - VISA - MasterCard - Paypal
  • Customer Service Customer Service
    +33 2 97 67 64 83 - 9 am to 5 pm


The Sc-Nub® Boom Strap,clew strap with pulley is a dyneema® tie strap with a Nub® low friction open ring for cascading boom vang, cunningham and backstay.


  • Allows easy cascade mounting for very high loads
  • Single, double or triple cascade of boom vang, cunningham, backstay, etc.

Nodus & Tip

  • Multiply the power of your hoists, a high quality accessory that makes life easier for the yachtsman and the sailor.

Data sheet

  • 100% sewn webbing in pre-stretched Dyneema® R2 32fx, enzymatic ¬ black
  • Structural eye termination ¬ sewn
  • Dyneema® lashing 
  • Nodus-Nub low friction pulley ¬ high strength thermoplastic resin ¬ black 

Product Details





Room Height

"Lashing" Rope Adjustable Loop Mainsail size
R2 Basket Straight R2 L straight 40 nds
KG cm  mm Max cm m2
Sc 3 NUB 2000 12 3 40 30/60
Sc 4 NUB 3000 16 3 50 60/80
Sc 5 NUB 4000 20 3 60 80/100


  • Spherical friction pulley for heavy load BL 4700 Kg 
  • Easy and quick to install, lashing directly to the boom in Dyneema®. 
  • Reliable and maintenance free
  • Certified resistance